Would having the stock o2 sensor unplugged.

[Jiggalude]

cause the car to run excessively rich at idle, I'm talking pegged at 10.0? Also, the car was running fine with the AEM UEGO in the stock location, and I haven't gotten around to disconnecting the stock ECU connection for the o2. But if the stock o2 is unplugged would it make the car run excessively rich and like poop? The CEL didn't come on until about the 4th time around the block. And it was running between 14.6/15.3 at idle, which I read is where it's supposed to be for idle, but now it's 10.0. Also, only getting 10 bars? of vacuum, where it was 14 at idle and 20 decelerating.

 

[hhuricane]

Yes, you have to use the stock O2 sensor. It's what the car uses to determine the fuel mix. You can't replace it with a wideband unless you are using something an AEM EMS or DSM Link.

 

[LiquidX]

cause the car to run excessively rich at idle, I'm talking pegged at 10.0?

Yes it's possible. The narrow band signal tells the ECU how to adjust the fuel for idle and other things.

Also, the car was running fine with the AEM UEGO in the stock location, and I haven't gotten around to disconnecting the stock ECU connection for the o2.

Did you have the WB in narrow band simulation?

But if the stock o2 is unplugged would it make the car run excessively rich and like poop?

Again, yes

Also, only getting 10 bars? of vacuum, where it was 14 at idle and 20 decelerating.

1. Bar = Pressure/Atmosphere
2. 1 Bar = 14.7 PSI = 1 Atmosphere
3. 10 Bar = 147 PSI = 10 Atmospheres
4. Vacuum = inHg = Inches Mercury

If you don't have cams then it sounds like you have a slight boost leak with your 14inHg vacuum.

 

[Jiggalude]

Alright I just pulled the CEL and it gave me one long beep and two short beeps, which according to this http://www.dsmtuners.com/forums/articles-tuning-ecu/319844-1g-code-reader-cel-code-reader.html is the air flow sensor. What is that? Also, even with my MBC all the way closed, I'm still only getting stock psi. Why is that?

 

[95g-s-x]

Alright I just pulled the CEL and it gave me one long beep and two short beeps, which according to this http://www.dsmtuners.com/forums/articles-tuning-ecu/319844-1g-code-reader-cel-code-reader.html is the air flow sensor. What is that? Also, even with my MBC all the way closed, I'm still only getting stock psi. Why is that?

It is the big can at the end of the intake....it is what meters the air going into the motor.

As far as the mbc, it is probably hooked up wrong.

 

[Jiggalude]

Ok so the Air flow sensor is just the MAF. I wonder why it's throwing a code now? And as far as the MBC, I have the side of the bc hooked to the wga and the bottom part to the boost source.